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Finding the Fourth Proportional to 578,673.89, 798,576.35 and 320,554.79

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Solution

The fourth proportional to 578,673.89, 798,576.35 and 320,554.79 is: 442,369.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,673.89 : 798,576.35 = 320,554.79 : x
  2. Step 2: Convert to fraction form
    578,673.89/798,576.35 = 320,554.79/x
  3. Step 3: Cross multiply
    578,673.89x = 798,576.35 × 320,554.79
  4. Step 4: Simplify right side
    578,673.89x = 255,987,470,180.34
  5. Step 5: Solve for x
    x = 255,987,470,180.34/578,673.89
  6. Step 6: Final answer
    x = 442,369.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.